The Fracture feature has two default subfeatures — the Fluid (Fracture) subfeature where convection and diffusion are specified and the
Fracture Material subfeature where the porosity
εp is defined.
For the Fracture boundary condition, there are a number of
Attributes available which can be accessed either via the
Physics Ribbon toolbar (for Windows) or by right-clicking on the
Fracture node. These attributes are identical to the
Boundary, Edge, Point, and Pair Nodes for the Transport of Diluted Species in Fractures Interface.